P2P exchange + Powerdown timing problem

romane — Sun, 06 May 2018 05:45:46 GMT

Hello, I bougth two PN532. I implement P2P communication with DEP protocol in active mode. After communication, both PN532 receives the command "POWERDOWN 0x88 0x01" (=Wake up on RF field & I2C and Generate an IRQ on wake up). Answer is correct and there is no error code. PROBLEM : when the target powers down before the initiator does, the "wake up on rf field" does not work anymore.What can I do?

Re: P2P exchange + Powerdown timing problem

IvanRuiz — Fri, 29 Jun 2018 16:12:42 GMT

Hello,

Please make sure that CIU_wu_en is enabled as a wake-up source. For more information please refer to Table 144 of the data-sheet.

The sensitivity of the RF level detector is adjustable in a 4-bit range, please refer to chapter 8.6.8 RF level detector of the data-sheet.

As well, verify if RF level detector is enabled as mentioned in chapter 8.5.4 Soft-Power-Down mode (SPD) of the data-sheet: https://www.nxp.com/docs/en/nxp/data-sheets/PN532_C1.pdf

Hope this helps!

Regards,

Ivan.

NFCのトピックP2P exchange + Powerdown timing problem

P2P exchange + Powerdown timing problem

Re: P2P exchange + Powerdown timing problem